Window elevating mechanism



Dec. 29, 1936. CHANDLER 2,066,285

WINDOW ELEVATING MECHANISM Filed Jan. 16, 1936 2 Sheets-Sheet 1 Dec. 29; 1936. D. L. CHANDLER V WINDOW ELEVATING MECHANISM 2 Sheets-Sheet 2 Filed Jan. 16, 1936 Patented Dec. 29, 1936 UNITED STATES WINDOW ELEVATING MECHANISM Daniel L. Chandler, Somcrville, Mass., assignor, by direct and mesne assignments, of thirteen per cent to Edwin M. Bailey,

twenty-two per cent to George W.

Mass.,

Swampscott,

Ewing, Peabody, Mass., twenty-two per cent to Eugene B. Fraser, Lynn, Mass., ten per cent to Eugene B. Fraser,

Lynn,

Mass., as trustee,

twenty-five per cent to Fred H. Rowe, Gloucester, Mass., and eight per cent to William H.

Davis, Lynn, Mass.

Application January 16, 1936, Serial No. 59,375

4 Claims. (Cl. 268-426) My present invention relates to automobile doors and more particularly to mechanism to operate the glass sash in automobile doors having a semi-circular top and using semi-circular glass sashes.

In modern automobiles streamline design the top of the front doors must of necessity be. curved on their upper front corners to correspond to the angular streamlined pitch of the windshield, the 'rear upper corner may or may not be curved as tive mechanism which raises and lowers the glass sash in a vertical line in which both of the lower corners are positively moved in parallel synchronism by one hand operated lever thereby making it possible to use a semi-circular sash in a semicircular top door. It should be understood however that such mechanism may be used with any other shaped glass and is not necessarily limited to curved top sash shown in the drawings.

The principal object of my present invention is an improved elevating mechanism for curved sash automobile doors and the like.

Another object is elevating mechanism for semi-circular window sash in which the sash is supported and operated from each end in parallel synchronism by means of force applied to one arm of a bell-crank lever.

Other objects and novel features comprising the construction and operation of my invention will appear as the description of the same progresses.

In the drawings illustrating the preferred embodiment of my invention,

Fig. 1 is an inside elevation of an automobile door with the upholstery removed to show the construction Fig. 2 is an enlarged elevation of the double heart-shaped cam attached to one of the levers as viewed from the opposite side, as shown in Fig. 1;

Fig. 3 is a side elevation of the elevating mechanism shown in Fig. l but removed from the door frame;

Fig. 4 is a detail cross-section taken on the line 44 indicated in Fig. 3, and

Fig. 5 is another side elevation of the elevating mechanism, similar to Fig. 3 but showing the sash in a raised position.

Referring more in detail to the drawings, I0 indicates a door frame having a curved top II, the front edge of said door being on the left-hand side of the drawings and viewed from the inside with the upholstery removed. On the inner opening I2 of the door It I have mounted a panel I3 which is attached to the door frame opening I2 by means of screws I4. The door sash I5 is directly connected to the elevating mechanism at pivot points It and II, a portion of the said sash being guided in conventional guide ways in the door frame. The lifting mechanism proper is mounted and pivoted at I8 and I9 to the panel I3.

The pivot I9 is solidly fixed to the bell-crank lever 2!) and is slotted for the purpose of anchoring one end of a coil spring 2|, the other end of the spring being anchored around a pin 22 which is fixed in the panel I3. The purpose of the coil spring ZI is to provide a counterbalance for the weight of sash I5 such that no more force is necessary to raise the sash than is necessary to lower said sash.

The lower arm of the bell-crank lever 20 is pivoted at 23 to a link 25 the other end of which is pivoted at I6 to a channel support member in which the glass sash I5 is mounted. A cam track lever 25 is pivoted at I8 to the said panel I3, the opposite end of which is pivoted at 26 to another link 2! which in turn is pivoted at IT to the glass sash channel member aforesaid.

At the point at which the lower arm of the bellcrank lever 20 crosses the cam track lever 25, I have provided a double heart-shaped cam 28 which engages the double cam track in the lever 25. The cam 28 is secured to the back side of the lever 20, as viewed in Figs. 1, 3 and 5 and is positioned such that the cam faces 29, 30 and 3| engage the faces 32 and 33 of the cam track lever 25 when the sash I5 is in intermediate positions between its highest and lowest positions. When the sash I5 is approaching its upper or lower limits the cam faces 34 and 3| contact with the faces 32 and 35 on the cam track lever 25 carrying the levers 25 and 20 to their limit of travel.

The cam 28 and pivot points 23 and 26 are so positioned with respect to the cam track in the lever 20 that the vertical movement of the sash at pivot points I6 and I! is equal and the both ends of the sash channel member move up or down in the same horizontal plane thereby making it impossible for the sash I5 to tilt to one side or the other and jam in the door frame guides.

The bell-crank lever 20 is actuated by means of a lever 36 which is pivoted to the bell-crank lever 20 at 31, the other end being pivoted at 38 to a sliding lock unit 39 which travels on a rack 40 also attached to the panel l3. The hand lever 4t protrudes through window sill 42 of the door l and operates in a horizontal direction thereby actuating the bell-crank lever 20.

Inasmuchas the lock member 39 does not comprise a part of the sash elevating mechanism with which this application is concerned its particular description and operation is omitted in the present application.

The link 24 is provided with a loop on its upper end as shown in Fig. 4 for the purpose of allowing the corresponding end of the cam track leverthe bottom of said sash, a cam track lever piv- 25 to reach its lowermost position; as shown in Figs.1and 3. I

It will be apparent that while I have shown a curved sash for use with my elevating mechanism yet any rectangular shaped sash could be used with equal ease.

Having thus described my invention what I claim as new is:;

p 1. .An elevating mechanism for sliding sash Windows, comprising a counterbalanced bellcrank lever pivoted to a fixed panel, a cam track lever also pivoted to said panel, one end of said bell-crank lever and said cam track lever pivoted to the bottom of said sash by means of connecting link levers, a three sided cam fixed to one side of said bell-crank lever and engaging in the cam track of said cam track lever.

2. An elevating mechanism for sliding sash windows in automobile doors, a counterbalanced bell-crank lever pivoted in a panel fixed to said door, a cam track lever also pivoted to said panel,

track lever, one end of said cam track lever and one end of said bell-crank lever pivoted to the r lower edges of said sash.

3. An elevating mechanism for sliding sash windows in automobile doors, a counterbalanced bell-crank lever pivoted in the panel of said door, one end of said bell-crank lever pivoted to oted to the said door panel at one end, the'opposite end being pivoted to the bottom of said sash, said bell-crank lever and said cam track lever slidably connected together by means of a three-sided cam engaged in the cam track of said cam track lever and anchored to said bellcrank lever.

4. Elevating mechanism for sliding sash win- (lows in automobile doors, comprising cam con-' 

